Tokyo issues Level 4 flood danger warning for Nogawa and Senkawa rivers
Authorities have confirmed evacuation information from local municipalities, with warnings issued for the Nogawa and Senkawa rivers in Tokyo at 7:40 am on June 3, 2026.
The Japan Meteorological Agency and the Tokyo Metropolitan Government issued a Level 4 flood danger warning at 7:40 am on June 3, 2026, for the Nogawa and Senkawa rivers in Tokyo. This alert, the highest level of danger short of a special warning, indicates a serious threat to life and property, necessitating immediate evacuation for residents in affected zones.
Authorities have confirmed evacuation information from local municipalities and warned that flooding is likely to occur in the near future. The warning was issued as part of the broader disaster response to Typhoon 6, which is currently impacting multiple regions across Japan.
The Tokyo alert coincides with other severe weather measures in the Kanto region. Evacuation orders were issued for parts of Yokohama’s Totsuka Ward and Yokosuka City in Kanagawa Prefecture earlier in the morning. In Yokohama, authorities also noted the risk of flooding in the Hirado Nagaya River.
This event is part of a wider pattern of severe weather triggered by linear rainbands. Earlier on June 3, the Japan Meteorological Agency issued a 'linear rainband imminent prediction' warning for southern Tokushima, Wakayama, and Mie prefectures. In Wakayama, a Level 5 flood special warning has been issued, representing the maximum level of alert in Japan’s disaster warning system.
The intensifying weather system has also disrupted transport infrastructure. Potential disruptions have been reported for the Tokaido Shinkansen and flights, with cancellations affecting departures from Haneda Airport. The Japan Meteorological Agency continues to monitor the situation as the typhoon moves through the region.
